Separable casting box for stereotype printing plates



' April 8, 1930.

J. A. ISBELL SEPARABLE CASTING BO X FOR STEREOTYPE PRINTING PLATESOriginal Filed l larch 4, 1927 2 Sheets-Sheet l I SEPARABLE CASTING BOXFOR STEREOTYPE PRINTING PLATES J A. ISBEQLL April 8, 1930.

- Original Filed March 4, 1927 2 Sheets-Sheet 2 Patented Apr- UNITEDSTATES JOHN A. ISIBELL, OF PLAINFIELD, NEW J'ER snxiAssrolvon ro woonNEWSPAPER CHINERY CORPORATION, or NEW YORK, 1v. v A conronerronOF'VIRGINIA SEPARABLE CASTING BOX FOR STEREO-TYRE BRINTINGLPLATESApplication filed. March 4, .1927, Serial No. 1725 99. mew-fugue14,1929.

This invention relates to the stereotype plate casting box of a castingmachine of the type in which the concave back moves away from therotatable core or cylinder to open the mold and I have shown it inconnection with a machine of the horizontal type.

The principal object of the invention is to provide a simple and easilyoperated construction by which the back, in addition to its movementaway from the cylinder, can be moved sideways to facilitate and simplifythe insertion of the matrix, its replacement and its inspection. Theinvention also involves the securing of these results in a simpleinanner involving only a few parts and of such a nature that the castingbox can be restored to an accurate position for casting ina simple andconvenient manner and without complicating the mechanism of the machineor changing the motion by which the back is moved toward and from thecore or cylinder.

'Other objects and advantages of the invention will. appear hereinafter.

Reference is to be had tothe accompanying drawings in which Fig. 1 is anend view of a casting mold of the type mentioned showing a preferredem-r bodiment of this invention and illustrating the mold in closedposition and 30 Fig. 2 is a similar view showing in dotted lines theposition of the back when it is drawn away from the cylinder in theusual manner and, in full lines, the position of the back whenshiftedfor manipulation of the matrix.

lVith my invention the core or cylinder is of the usual construction andit co-operates with the concave back 11. The back is shown as having theusual matrix holders l2 and as mounted on a frame 13 which is moved upand down toward the cylinder by a crank 14 and link 15' as is usual incertain class of stereotype plate making machines.

The reciprocable frame 1 3 which is, of course, mounted to move in astraight line is provided with an extension 16 at one side which may beflat. The back 12 is mounted on four rollers 18 which, when the back isin casting position rest in four depressions 17 so as to register theback accurately with the 50 cylinder and avoid all adjustmentsand'diificulties about having the parts in registration.

at the time of casting.

lVhen the done by the rotation 10, the back, 11 move s'downto thedotted-line the cylinder 10. At this'time it ismoved out plate is to bedelivered, whi ch isil of the core or cylinder e u 7 v V u I position inFig. 2 where 1t 1s entlrelybelow;

on the extension 16 in anydesired way. I T

have shown a hand-grip 20 by which itcan be pulled forward to the'fullline position shown inFig.2.

Now the matrix Mean be taken out, inspect ed or replaced withoutinterference with the other mechanism, particularly the cylinder. matrixholder12 with its clip can be reached It will'be seen that in thisposition the inner and the outer one is in a position tobeoperatedfreely at a distance from the rest of the mechanism of the machine.

VVhenqthematrixisput back in the back the latter can be rolled back tothe position shown in dotted lines by the rollers Then the anddepressions.

parts 11 and 13 move as a single member, risaware of the fact thatmodifications can be made therein by any person skilled in the artwithout departing from the scope of the invention as expressed in theclaims. Therefore, I do not wish to be limited to all the details ofconstruction herein shown and described, but what I do claim-is H 1. Ina casting mold, the combination with two mold parts, one movable towardand from the other, of means for guiding the movable mold member to movesubstantially in a directiontransverse toits first named motion toexpose its interior at the side of the other mold part.

2. In a stereotype'plate casting machine, the combination with arotatable cylinder and a reciprocable back, of a frame on which the backrests movable toward and from the cylinder, said frame having anextension at (Fig. 2) and will register itself so' only a single form ofthe invention, I am I r one side for supportlng the back thereon at theside of the machine for the purpose described.

3. The combination with a casting mold comprising a cylinder and backand means for moving the back bodily toward and from the'cylinder, ofguiding means for the back arranged transversely to the direction ofmotion of the back toward and from the cylinder, whereby the back can bemoved laterally to ex ose it at the side of the cylinder.

'4. n acurved stereotype plate casting machine, the combination with areciprocable frame and means for reciprocating it, of a rotatablecylinder located in line with the directionof reciprocation, said framebeing provided with a rest extending outwardly to one side of thecylinder, and a back located on the rest and movable thereon from aposition'directly under the cylinder to a position atone side thereoffor the manipulation of the matrix. 7

5. In a stereotype plate casting machine, the combination with areciprocable frame and a back supported thereon, of a series of rollerson the'bottom of the back by which said back can be moved along saidframe in a line transverse to the direction of reciprocation of theframe, said frame having clepressions in its surface for receiving saidrollers when they are in a position to leave the back in castingposition and constituting registering means therefor.

In testimony whereof I have hereunto affixed my signature.

JOHN A. ISBELL.

